WEALTH UNIVERSITY

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This industry, which includes multinational and independent oil and gas producers and refiners, natural gas pipeline companies, gasoline service stations and fuel oil dealers, has long enjoyed a history of strong influence in Washington. Individuals and political action committees affiliated with oil and gas companies have donated $238.7 million to candidates and parties since the 1990 election cycle, 75 percent of which has gone to Republicans.

http://www.opensecrets.org/industries/indus.php?cycle=2010&ind=E01